This is a front-end for the Online Encyclopedia of Integer Sequences, made by Christian Perfect. The idea is to provide OEIS entries in non-ancient HTML, and then to think about how they're presented visually. The source code is on GitHub.
3(n) in the Ono et al. link. See a formula below. - _Wolfdieter Lang's wiki page.
3(n) in the Ono et al. link. See a formula below. - _Wolfdieter Lang has authored 0 sequences.